Awesome video by Joe Hewitt on the iUI library. Thanks to<p><a href="http://news.ycombinator.com/user?id=ashu" rel="nofollow">http://news.ycombinator.com/user?id=ashu</a><p>for mentioning iUI.
Why late? I don't think the SDK will kill iUI (or iPhone web application development more generally) - it's targeted at a different developer audience.